remove a stray println!

src/format.rs

@@ -928,7 +928,6 @@ impl<'a> Formatter<'a> {
  || (br.value.lines.iter().flatten())
  .any(|word| word_is_multiline(&word.value))
  });
- println!("pack depth {}", depth);
  for (i, br) in pack.branches.iter().enumerate() {
  if i == 0 {
  let add_leading_newline = any_multiline